Under NRS 200.460, false imprisonment involves detaining another person without a legal cause. Under NRS § 207.280, Nevada law makes it a misdemeanor to knowingly make a false police report that causes law enforcement to conduct an investigation.1. False imprisonment is an unlawful violation of the personal liberty of another, and consists in confinement or detention without sufficient legal authority. In the United States, it is against the law for law enforcement officers to falsely arrest someone. Though mitigation of damages is an affirmative defense, see Instruction ), it is rarely a complete defense. False arrests come in different shades of illegality. Frequently Asked Questions. Click on the desired question to receive the answer. 1. False arrest occurs when someone makes an arrest, and the facts of the "crime" don't fit the elements in the statute. Section 199.130 - False affidavit or complaint to effect arrest or search 1.